This document provides an overview of mitosis and meiosis. Mitosis produces two daughter cells through the phases of prophase, metaphase, anaphase and telophase. Meiosis involves two rounds of division and produces four haploid daughter cells. Meiosis 1 separates homologous chromosomes, while meiosis 2 separates sister chromatids. The key phases of meiosis 1 and 2, including prophase, metaphase, anaphase and telophase, are also described.

1. MITOSIS AND MEIOSIS
BY:
ASHLEY BULLER

2. Mitosis
 Is nuclear division and cyotkinesis.
 Produces two daughter cells.

3. Prophase
Chromosomes are
coiled together.
•Each duplication of
chromosomes are a pair
of sister chromatids.
•Nucleolus disappears.

4. Metapha
se
Nuclear membrane
completely disappears.
Polar fiber extend
continually from poles
to the center of the cell.
Chromosomes move
randomly until they
attach to the pole fibers.
Chromosomes are then
aligned with the plate at
right angles to the
spindle poles.

5. Anaphas
e
Paired centromerer in
each chromosome
moves apart.
When they separate
they are now one
chromosome, called
daughter cells.
Daughter chromosomes
move to opposite ends
of the pole.
The chromosomes
migrate first to the
Centro mere

6. Telophase
 Chromosomes are
cordoned off into new
nuclei in the daughter
cells.
 Polar fibers are
lengthening.
 Nucleus begin to form
from opposite poles.
 Nuclear envelopes are
formed from remaining
pieces of the parent
cell’s nuclear envelope.
 Chromatin fibers of
chromosomes uncoil.

7. Cytokinesis
 When the cytoplasm
starts to divide.
 Divides two new nuclei
into daughter cells.

8. Meiosis
 Meiosis 1:
 Chromosomes in a
diploid cell resegregate.
 Produces four haploid
daughter cells.
 Meiosis 2:
 Separates the
chromatids producing
two daughter cells and
each has twenty-three
chromosomes.

9. Prophase 1 and 2
Prophase 1:
 Chromosomes become
visible.
 Combine to form
tetrads.
 Contain two pairs of
chromosomes.
 Cross over at points.
 Genetic material
Prophase 2:
 From telophase to
prophase 2 without
interphase.
 Nuclear envelope is
dissolved and spindle is
set up.

10. Metaphase 1 and 2
Metaphase 1:
 Trends are arranged
across the center by the
kinetochores.
Metaphase 2:
 Chromosomes move
into the center.
 There are two
chromosomes.
 Chromatids split off.

11. Anaphase 1 and 2
Anaphase 1:
 Chromatids holding the
chromosomes together
loosens.
 Homologous chromatids
are separated into
separate poles.
Anaphase 2:
 Kinetochores moves
towards the poles.
 Splits the sister
chromatids.

12. Telophase 1 and 2
Telophase 1:
 Chromosomes are moved
into opposite poles.
 Nuclear envelope
reforms.
 Spindle is broken down.
Telophase 2:
 Chromatids concentrate
in the poles and nuclear
envelope is reformed and
the spindle is dissolved
again.
 Cells divide
 Leaves four haploid cells